Check out these swivel socket sets: http://thecoolesttools.com/universal-swivel-impact-socket-sets-38/
Gearwrench, SK, Sunex, Genius, etc. all make quality tools. And a lot of people don't trust Harbor Freight swivel sockets, but I own a 3/8" and a 1/2" set, and I've had the 3/8" set for about...